公开(公告)号：US20060068735A1

公开(公告)日：2006-03-30

申请号：US11280331

申请日：2005-11-17

申请人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

发明人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

IPC分类号： H04B7/00 ,  H04B1/26 ,  H04B1/06

CPC分类号： H03G3/3068 ,  H03G3/3052 ,  H04B1/30

摘要： A radio receiver comprises an LNA which amplifies An RF signal, a quadrature demodulator which directly demodulates the amplified RF signal into a B/B signal, using a LO signal, a VGA which amplifies the B/B signal, a DC offset canceller which executes feedback control on the amplified B/B signal, and a gain controller which controls at least the gain of the LNA, the gain controller including a signal intensity detector which detects the intensity of the amplified B/B signal, a gain selector which selects a desired one of preset gains on the basis of the detected intensity, a timing controller which controls timing of switching to the selected desired gain, and a gain control signal generator which changes, in accordance with the controlled timing, the interval at which an LNA gain control signal is generated.

公开(公告)号：US07272371B2

公开(公告)日：2007-09-18

申请号：US10327104

申请日：2002-12-24

申请人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

发明人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H03G3/3068 ,  H03G3/3052 ,  H04B1/30

摘要： A radio receiver comprises an LNA which amplifies An RF signal, a quadrature demodulator which directly demodulates the amplified RF signal into a B/B signal, using a LO signal, a VGA which amplifies the B/B signal, a DC offset canceller which executes feedback control on the amplified B/B signal, and a gain controller which controls at least the gain of the LNA, the gain controller including a signal intensity detector which detects the intensity of the amplified B/B signal, a gain selector which selects a desired one of preset gains on the basis of the detected intensity, a timing controller which controls timing of switching to the selected desired gain, and a gain control signal generator which changes, in accordance with the controlled timing, the interval at which an LNA gain control signal is generated.

摘要翻译： 无线电接收机包括放大An RF信号的LNA，使用LO信号将放大的RF信号直接解调为B / B信号的正交解调器，放大B / B信号的VGA; DC偏移消除器，其执行 放大的B / B信号的反馈控制以及至少控制LNA的增益的增益控制器，增益控制器包括检测放大的B / B信号的强度的信号强度检测器，选择 基于检测到的强度来预期的预设增益之一，控制切换到所选择的期望增益的定时的定时控制器;以及增益控制信号发生器，其根据受控定时改变LNA增益的间隔 产生控制信号。

公开(公告)号：US07555274B2

公开(公告)日：2009-06-30

申请号：US11280315

申请日：2005-11-17

申请人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

发明人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H03G3/3068 ,  H03G3/3052 ,  H04B1/30

摘要： A radio receiver comprises an LNA which amplifies An RF signal, a quadrature demodulator which directly demodulates the amplified RF signal into a B/B signal, using a LO signal, a VGA which amplifies the B/B signal, a DC offset canceller which executes feedback control on the amplified B/B signal, and a gain controller which controls at least the gain of the LNA, the gain controller including a signal intensity detector which detects the intensity of the amplified B/B signal, a gain selector which selects a desired one of preset gains on the basis of the detected intensity, a timing controller which controls timing of switching to the selected desired gain, and a gain control signal generator which changes, in accordance with the controlled timing, the interval at which an LNA gain control signal is generated.

摘要翻译： 无线电接收机包括放大An RF信号的LNA，使用LO信号将放大的RF信号直接解调为B / B信号的正交解调器，放大B / B信号的VGA; DC偏移消除器，其执行 放大的B / B信号的反馈控制以及至少控制LNA的增益的增益控制器，增益控制器包括检测放大的B / B信号的强度的信号强度检测器，选择一个 基于检测到的强度来预期的预设增益之一，控制切换到所选择的期望增益的定时的定时控制器;以及增益控制信号发生器，其根据受控定时改变LNA增益的间隔 产生控制信号。

公开(公告)号：US20060068734A1

公开(公告)日：2006-03-30

申请号：US11280315

申请日：2005-11-17

申请人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

发明人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

IPC分类号： H04B7/00 ,  H04B1/06

CPC分类号： H03G3/3068 ,  H03G3/3052 ,  H04B1/30

摘要： A radio receiver comprises an LNA which amplifies An RF signal, a quadrature demodulator which directly demodulates the amplified RF signal into a B/B signal, using a LO signal, a VGA which amplifies the B/B signal, a DC offset canceller which executes feedback control on the amplified B/B signal, and a gain controller which controls at least the gain of the LNA, the gain controller including a signal intensity detector which detects the intensity of the amplified B/B signal, a gain selector which selects a desired one of preset gains on the basis of the detected intensity, a timing controller which controls timing of switching to the selected desired gain, and a gain control signal generator which changes, in accordance with the controlled timing, the interval at which an LNA gain control signal is generated.

公开(公告)号：US07515890B2

公开(公告)日：2009-04-07

申请号：US11280331

申请日：2005-11-17

申请人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

发明人： Takehiko Toyoda ,  Hiroshi Yoshida ,  Takayuki Kato

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H03G3/3068 ,  H03G3/3052 ,  H04B1/30

摘要： A radio receiver comprises an LNA which amplifies An RF signal, a quadrature demodulator which directly demodulates the amplified RF signal into a B/B signal, using a LO signal, a VGA which amplifies the B/B signal, a DC offset canceller which executes feedback control on the amplified B/B signal, and a gain controller which controls at least the gain of the LNA, the gain controller including a signal intensity detector which detects the intensity of the amplified B/B signal, a gain selector which selects a desired one of preset gains on the basis of the detected intensity, a timing controller which controls timing of switching to the selected desired gain, and a gain control signal generator which changes, in accordance with the controlled timing, the interval at which an LNA gain control signal is generated.

公开(公告)号：US20060194590A1

公开(公告)日：2006-08-31

申请号：US11411854

申请日：2006-04-27

申请人： Hiroki Shoki ,  Ichiro Seto ,  Shuichi Sekine ,  Kuniaki Ito ,  Naoko Ono ,  Hiroshi Yoshida ,  Takehiko Toyoda

发明人： Hiroki Shoki ,  Ichiro Seto ,  Shuichi Sekine ,  Kuniaki Ito ,  Naoko Ono ,  Hiroshi Yoshida ,  Takehiko Toyoda

IPC分类号： H04Q7/20

CPC分类号： H04W64/00 ,  H04W4/02 ,  H04W16/00

摘要： A mobile communications terminal includes positional information generator configured to generate positional information indicating a current position of the terminal, receiver which receives identification information sent from the base station of the second mobile communication network, notification information generator configured to generate notification information including the identification information and the positional information generated at the time of receiving the identification information, and transmitter which transmits the notification information to the service area calculation apparatus via the first mobile communication network to derive the information concerning the service area.

摘要翻译： 移动通信终端包括：位置信息生成器，被配置为生成表示终端的当前位置的位置信息，接收从第二移动通信网络的基站发送的识别信息的接收者;被配置为生成包含识别信息的通知信息的通知信息生成器 以及在接收识别信息时产生的位置信息，以及经由第一移动通信网络将通知信息发送到服务区域计算装置的发送器，以得出关于服务区域的信息。

公开(公告)号：US08311158B2

公开(公告)日：2012-11-13

申请号：US12683039

申请日：2010-01-06

申请人： Hiroshi Yoshida ,  Kazumi Sato ,  Takehiko Toyoda

发明人： Hiroshi Yoshida ,  Kazumi Sato ,  Takehiko Toyoda

IPC分类号： H03D3/18

CPC分类号： H04B1/10

摘要： A receiver circuit includes an LPF configured to remove an interference signal and/or a noise from a received signal, an ADC configured to digitize a signal output from the LPF, an FIR filter configured to further remove an interference signal and/or a noise from the signal output from the ADC and compensate imperfection in in-band characteristics caused in the LPF, a delay circuit configured to delay the signal output from the ADC by a predetermined time period, and a control circuit configured to control a destination of the signal output from the ADC, wherein the control circuit switches the destination of the signal output from the ADC to one of the FIR filter and the delay circuit according to a predetermined condition.

摘要翻译： 接收机电路包括被配置为从接收信号去除干扰信号和/或噪声的LPF，被配置为数字化从LPF输出的信号的ADC，被配置为进一步去除干扰信号和/或噪声的FIR滤波器 从ADC输出的信号并且补偿在LPF中引起的带内特性中的缺陷，延迟电路被配置为将来自ADC的信号延迟预定时间段，以及控制电路，被配置为控制信号输出的目的地 其中控制电路根据预定条件将从ADC输出的信号的目的地切换到FIR滤波器和延迟电路之一。

公开(公告)号：US08041368B2

公开(公告)日：2011-10-18

申请号：US11935260

申请日：2007-11-05

申请人： Hiroki Shoki ,  Ichiro Seto ,  Shuichi Sekine ,  Kuniaki Ito ,  Naoko Ono ,  Hiroshi Yoshida ,  Takehiko Toyoda

发明人： Hiroki Shoki ,  Ichiro Seto ,  Shuichi Sekine ,  Kuniaki Ito ,  Naoko Ono ,  Hiroshi Yoshida ,  Takehiko Toyoda

IPC分类号： H04Q7/20

CPC分类号： H04W64/00 ,  H04W4/02 ,  H04W16/00

摘要： A mobile communications terminal includes positional information generator configured to generate positional information indicating a current position of the terminal, receiver which receives identification information sent from the base station of the second mobile communication network, notification information generator configured to generate notification information including the identification information and the positional information generated at the time of receiving the identification information, and transmitter which transmits the notification information to the service area calculation apparatus via the first mobile communication network to derive the information concerning the service area.

摘要翻译： 移动通信终端包括：位置信息生成器，被配置为生成表示终端的当前位置的位置信息，接收从第二移动通信网络的基站发送的识别信息的接收者;被配置为生成包含识别信息的通知信息的通知信息生成器 以及在接收识别信息时产生的位置信息，以及经由第一移动通信网络将通知信息发送到服务区域计算装置的发送器，以得出关于服务区域的信息。

公开(公告)号：US07245894B2

公开(公告)日：2007-07-17

申请号：US10819288

申请日：2004-04-07

申请人： Takahiro Sekiguchi ,  Hiroshi Yoshida ,  Ichiro Seto ,  Takehiko Toyoda

发明人： Takahiro Sekiguchi ,  Hiroshi Yoshida ,  Ichiro Seto ,  Takehiko Toyoda

IPC分类号： H04B1/06

CPC分类号： H03G3/3068 ,  H03D3/008 ,  H04B1/30 ,  H04L27/3809

摘要： A radio receiver comprises a first amplifier to amplify a received radio signal; a quadrature demodulator to demodulate the radio signal amplified by said first amplifier and thereby generate a baseband signal; a second amplifier to amplify the baseband signal; a demodulator to demodulate the baseband signal amplified by said second amplifier; and a gain controller to control timing of a change in a gain of said second amplifier, in case that changing the gain of said first amplifier and the gain of said second amplifier, on the basis of a gain of said first amplifier before and after the change.

摘要翻译： 无线电接收机包括：放大接收的无线电信号的第一放大器; 正交解调器，用于解调由所述第一放大器放大的无线电信号，从而产生基带信号; 第二放大器，用于放大基带信号; 解调器，用于解调由所述第二放大器放大的基带信号; 以及增益控制器，用于在根据所述第一放大器的增益前后改变所述第一放大器的增益和所述第二放大器的增益的情况下，控制所述第二放大器的增益变化的定时 更改。

公开(公告)号：US20100189205A1

公开(公告)日：2010-07-29

申请号：US12683039

申请日：2010-01-06

申请人： Hiroshi Yoshida ,  Kazumi Sato ,  Takehiko Toyoda

发明人： Hiroshi Yoshida ,  Kazumi Sato ,  Takehiko Toyoda

IPC分类号： H04B1/10

CPC分类号： H04B1/10

摘要： A receiver circuit includes an LPF configured to remove an interference signal and/or a noise from a received signal, an ADC configured to digitize a signal output from the LPF, an FIR filter configured to further remove an interference signal and/or a noise from the signal output from the ADC and compensate imperfection in in-band characteristics caused in the LPF, a delay circuit configured to delay the signal output from the ADC by a predetermined time period, and a control circuit configured to control a destination of the signal output from the ADC, wherein the control circuit switches the destination of the signal output from the ADC to one of the FIR filter and the delay circuit according to a predetermined condition.

摘要翻译： 接收机电路包括被配置为从接收信号去除干扰信号和/或噪声的LPF，被配置为数字化从LPF输出的信号的ADC，被配置为进一步去除干扰信号和/或噪声的FIR滤波器 从ADC输出的信号并且补偿在LPF中引起的带内特性中的缺陷，延迟电路被配置为将来自ADC的信号延迟预定时间段，以及控制电路，被配置为控制信号输出的目的地 其中控制电路根据预定条件将从ADC输出的信号的目的地切换到FIR滤波器和延迟电路之一。